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In: Statistics and Probability

Calculate the sample variance and sample standard deviation for the following frequency distribution of heart rates...

Calculate the sample variance and sample standard deviation for the following frequency distribution of heart rates for a sample of American adults. If necessary, round to one more decimal place than the largest number of decimal places given in the data.

Heart Rates in Beats per Minute
Class Frequency
61 - 66 4
67 - 72 8
73 - 78 5
79 - 84 7
85 - 90 13

Solutions

Expert Solution

Sample variance=75.2

Sample standard deviation =8.7

Answers are rounded off to 1 decimal places since data is in integer format that is data is round off to 0 decimals.

Note:

If there is any understanding problem regarding the sum, please feel free to ask any doubt in comment box. THANKS.

orchestra answered 2 years ago
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